Emergency grease cup



Jan. ze ,1926. 1,570,873

P. o. BROWN v EMERGENGY GREASE cur Filed May 14, 1925',

` cup. Thisjis open at its Patented Jan. 26, 1926.

UNITED STATES.

PERRY o. BRoWN, 0E snvINcEN'r, MINNEsoTn-ASSIGNOR or ONE-HALE To j. v. BACKSTROM, 0E sr. VINCENT, MINNESOTA.

PATENT OFFICE.

EMERGENCY GREASE. our.

Application med May 14, 1925.

To all whom 1f-may concern:

Be it known thatv I, PERRY O. BROWN, a citizen of4 the United States, residing at St. Vincent, in the county of Kittson and State of Minnesota, have invented certain new and useful Improvements in an Emergency Grease Cup,of which the following is a speciiication.

rThis invention relates to an improved lubricating device which may be briefly referred to as an emergency grease cup.

vThe purpose of the invention is to prevent the overheating of boxings, bearings, and pinions by supplying a lubricant thereto when the friction produced by the dry bearing creates a heat sufficient to cause automatic operation of the device.

.More particularly, I propose a grease cup which embodies a mercury receptacle having a plug`-adapted to be tapped into a screw hole inthe bearing or the like, the mercury being expanded under undue frictional ,heat created to act upon a' sliding plunger in a grease containing cup, whereby to force the' grease through an appropriate conduit to the part to be oiled.

An object is to generally improve upon devices of this class by providing one of comparative simplicity and durabillty which is composed of a plurality of readily disconnectible parts capable of being readily disassembled or assembled for repairs and cleaning.

The novelty resides in the particular construction of the details and rtheir novel association and arrangement.

Other features and advantages of the invention will become apparent from the foll lowing description and drawing.

In the accompanying drawing forming a part of this application and in which like numerals are employed to designate like parts throughout the same:

Figure l is a side elevational view of a lubricating device constructed in accordance with the present invention.

Figure 2 is a central vertical section through the same.

Referring to the drawings -in detail, the reference character 1 designates what may be designated as a grease or oil containing top and provided at this end with external screw threads. removable cover 2 is equipped with a flange screwed onto the threads and serving to close A serial No. 30,318.

the upper end of the cup. The cover `is vpreferably provided ywith a knurled finger piece 3 by means of which its removal and application is facilitated. The cup' is 'provided at its'bottom with an opening surrounded bva depending internally screw threaded flange i'which serres a purpose to be hereinafter described.

` Detachably connected to the flange is a hollow'base, indicated generally by the reference character 5. made, up of symmetrical half sections equipped with ears 6,` by means of which the two sections are bolted together'. The sectional base embodies a reduced neck 7 having a threaded upper end screwed into the flange 4. Below this neck is yan enlarged portion forming a mercury containing receptacle 8. Attached to the bottom of this receptacley is'an externally yscrew threaded plug 9` adapted to lbe tapped into a screw hole'in the bearing box, gear casing,for' the like. This plug 9 is formed with a' centralv opening, and the lower end of an oil conducting pipe.'10 is fitted' into the fsame. When the base is attached to the cup, the upper end of the pipe extends into the interior of the latter and terminates at a point adjacent the closure 2. A plunger 11 is associated with the device for the purpose of ejecting the lubricant. The plunger comprises a relatively large discular head 12 slidable in the cup, and a lower head 13 slidable in the neck 7 these two heads being connected together by a sleeve or the like 14. In practice, appropriate packing must be provided'to insure fluid tight joints.

In assembling the device, the cover 2 must be removed to permit the plunger to be inserted from the top of the cup and slid down over the tube 10 which has been previously inserted by attaching the hollow base 5 to the bottom flange of the cu As before stated, when the d evice is tapped into the journal box, or its equivalent, and the bearing runs dry, it is obvious that the frictional heat produced will serve to heat the device to a degree to cause the mercury in the chamber 8 to expand and to exert an upward thrust upon the plunger. The up- GUs'rAE This base is preferably` ward movement of the plunger will serve to lt is thought that by carefully considering the description in connection Withffthe d-iavf ings, persons familiar with devices ot' this classmwill be able to obtain a clear understand'in'rr ofthe saine: Therefore" a4 more lengthj,7 description is' thought unnecessary".

While the preferred embodiment ofthe. invention has been shown and described, itl

is to be understood that minorchanges coming within the field of invent-lon claimed maybe resorted to it deslred.

Having thus described fthieinventionf, ,what

I claim as new. and desir-cto lsecure-by Let-` ters'Patent is;-

l. ln a lubricating device of the class ydescribed, a cup, a lubricant conductingftube-f cxtending `lntof the cup: and :adapted to, conduct the lubricant therefronr-to-.therpart to be lubricated, a plunger slidablef in said cup ionforcing the-lubricant `intosai'd tube,I

and: mercury-ff receptacle carriedvby thebottoni of 'theicup slid-ably receiving a por# ticinot said plunger; Wherebyto vpermit the expansionof therrnerc'tury.to` actupcn saidportion and to cause the'plungerto eject the lubricant.

2 In a lubricating device of the class de-l scribed, a lubricant container', a hollow ibase; connected tothe bottom ofthe container, a

rior of fsaid container; and a yiplungerpistoni slid-able 'upon Asaid 'tube 'and' having `a? portion extendingY slidablyinto said container, said pjlmligert being.l actuated b vtlre lexpansion of mercury adapted to be placed in the aforesaid receptacle. A

3'." In a ltr-bricaYtintg device ofithe classi-deL scribed,` a'"lubricanttcontaining cup, open at its topnndprovided in its bot-tom with an openin'gmand a depending` internally screw threadedange, aremovable screw cover for the open top, a hollow base embodying a neck havingr screw threaded connection vvith sai'dfiange'5V anda-fan enlarged'portion forming a mercu'ryfcontainingchamber, .together'withv a. screw threaded plug, a conductrng pipe' corn'iectedl with said:l plugL and extending through1 said chamberneck, andwinto` the interior-V o' saidcupyan da.A plunger slidably mounted upon said tube and-havingporti-onsirslidable finJ saidfneck ar1'cl'-ci1p'.Y

4.-; In a. `lubricating vdevice of-:the class` described,y a lubricant containing` cup, lubricantfejectingplunger slfidable inlsaidlcup,` a portion of said plungervv extending` through apart v'of thez'cup.- to the exterior thereoi'a'ndf heat' controlled -means `cooperable' with the exteriorlv disposed portion-oit said Vplunger for actuating` the latter, said'means@beingA adapted-"t0 be located in 'closel proximity: to tl'iebearing-to belubricated andffbeing con-lr structed `to accommodate a quantity of mercury adapted tobe fexpandedbyv the heat.I and to? Ya-ctuate said plunger.

Inltestinionv. whereof I' axfmysignatures' PERRY o: BROWN. 

